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HomeMy WebLinkAboutApplication Files_85048_pg0226 ' POST DEVELOPMENT-DP1 2007-058 Jones-POST D1 Type 111 24-hr 10-year Rainfall=4.70" Prepared by J.R. Russo &Associates Printed 12/27/2010 ' HydroCADO 8.50 s/n 002386 ©2007 HydroCAD Software Solutions LLC Page 23 Summary for Pond MH: Existing MH Inflow = 21.13 cfs @ 12.52 hrs, Volume= 15.621 of Outflow = 21.25 cfs @ 12.19 hrs, Volume= 15.621 af, Atten= 0%, Lag= 0.0 min Primary = 21.08 cfs @ 12.46 hrs, Volume= 15.609 of Secondary= 2.62 cfs @ 12.14 hrs, Volume= 0.012 of Routing by Sim-Route method w/Net Flows, Time Span= 0.00-80.00 hrs, dt= 0.01 hrs Peak Elev= 81.14' @ 12.54 hrs Flood Elev= 82.40' Device Routing Invert Outlet Devices #1 Primary 76.60' 24.0" x 50.0' long Culvert RCP, square edge headwall, Ke= 0.500 Outlet Invert=75.80' S= 0.0160 'f Cc= 0.900 n= 0.012 #2 Secondary 79.00' 15.0" x 94.0' long Culvert RCP, square edge headwall, Ke= 0.500 Outlet Invert= 79.00' S=-0.0255 /' Cc= 0.900 n= 0.012 Primary OutFlow Max=16.29 cfs @ 12.46 hrs HW=80.12' TW=78.96' (Dynamic Tailwater) 4--1=Culvert (Inlet Controls 16.29 cfs @ 5.19 fps) Secondary OutFlow Max=2.32 cfs @ 12.14 hrs HW=80.48' TW=80.29' (Dynamic Tailwater) 2=Culvert (Outlet Controls 2.32 cfs @ 1.89 fps) Summary for Pond RS: Red Star Basin Inflow Area = 8.170 ac, 41.25% Impervious, Inflow Depth = 2.13" for 10-year event Inflow = 19.66 cfs @ 12.10 hrs, Volume= 1.448 of ' Outflow 2.46 cfs @ 12.89 hrs, Volume= 1.448 af, Atten= 87%, Lag=47.1 min Primary 2.46 cfs @ 12.89 hrs, Volume= 1.448 of Routing by Sim-Route method w/Net Flows, Time Span= 0.00-80.00 hrs, dt= 0.01 hrs Peak Elev= 86.12' @ 12.89 hrs Surf.Area=42,317 sf Storage= 26,128 cf Plug-Flow detention time= 132.0 min calculated for 1.448 of(100% of inflow) Center-of-Mass det. time= 132.0 min ( 973.3-841.3) Volume Invert Avail.Storage Storage Description ' #1 84.90' 65,565 cf Custom Stage Data(Prismatic) Listed below(Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) ' 84.90 10 0 0 85.00 400 20 20 86.00 41,600 21,000 21,021 87.00 47,488 44,544 65,565 Device Routing Invert Outlet Devices ' #1 Primary 84.90' 12.0" x 680.0' long Culvert RCP, mitered to conform to fill, Ke= 0.700 Outlet Invert=81.50' S= 0.0050'/' Cc= 0.900 n= 0.012